[Amps] 813 efficiency

Bill Turner dezrat1242 at yahoo.com
Mon Feb 25 13:18:19 EST 2013


ORIGINAL MESSAGE: 
On Mon, 25 Feb 2013 10:43:14 -0500, Carl wrote:

>The 803 is another tube that is way underated for Pd.

REPLY: 
That could be, I've never used one. 

It's pretty moot anyway. I suspect in a few years transistors will dominate
ham amplifiers. Yes, cooling is a problem, but I do like the no tune, no
warmup and instant band changing they offer. 

A pair of Microsemi ARF 1500s can be had for less than $400 and will output
1500 watts PEP CW/SSB or 1 kW RTTY. 

Tubes will never go away completely, but the little silicon guys are
gaining. Take a look at the specs for the IC-PW1 for example. I'm in the
market for one if anyone has one for sale.

Bill, W6WRT


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